Coastal flood is one of the most frequent disasters in coastal cities in Indonesia. Semarang the largest city in Central Java is one of the cities most affected by rising sea levels. The low land surface along the coast and decreasing every year accompanied by rising sea levels makes the city prone to...

The strategy to strengthen the coming of the industrial revolution 4.0 era in the maritime sector is technology. Technological development is undeniably more advanced, and Indonesia must follow these advancements. At present, all countries in the world are in the stage of adjusting themselves to the...

Tuberculosis cases continue to increase, so in eliminating TB cases, the right way must be sought and have high leverage. Stopping airborne transmission is an action that can be done quickly. This research has developed a prototype of a “room neutralizer”, which can kill microorganisms in the air. The...

Several studies related to water quality assessment using the water quality index uses several water quality indices, including the water quality index (WQI), water pollution index (WPI), and river habitat Survey (RHS). Water pollution control is needed to achieve an ideal level of environmental health....

This research aims to determine the optimal location and number of fire stations in Situbondo Regency by considering the travel time, development cost, and track record of fire incidents using the maximal-covering problem model. Furthermore, the model is solved using the branch and bound method using...

Institut Teknologi PLN or IT-PLN in Jakarta has a solar power plant with capacity of 28.8 kW, which is operated only for research and teching. Due to limited access to the facility only two observation points of data have been collected. One in 2018 and one in 2020. The data are state-of-charge (SoC)...

Vital signs in the human body are statistical measures that determine health status, including heart rate per minute (BPM) and body temperature. Those two parameters correlate with a symptom of exposure to covid-19. Vital signs on patients with unstable health conditions should be checked regularly to...

Air conditioning is a device used to stabilize the temperature and humidity of the air in a room. Air conditioning uses volatile refrigerants and absorbs a lot of heat around it so that the surrounding temperature drops. The use of air conditioning requires a large amount of electrical power, resulting...

This paper proposes a combination approach of clustering, a hierarchical clustering to group similar characters of Balinese Lontar script; followed by k-means clustering as a way to identify the group to find-out the right label for members of the group. Based on the optimal value of the silhouette coefficient,...

Everyone has a different accent, the environment and culture can influence the difference in accents. Utilization of the recognition of the speaker’s accent can be used as a method to detect the speaker’s country of origin. Accent recognition belongs to the field of Automatic Speech Recognition (ASR),...

One of the implementation of a human face recognition system is an attendance system application. Attendance system is used to detect and recognize a person’s identity and stored as a face database. The face-based presence system developed in this study is a facial presence system using a hybrid feature...

Decision making recommendation system in this research aims to determine the amount of the building materials that must be available to meet the needs of the construction of housing projects. Calculating the right amount of the building materials is very important in a project, because it determines...

Wireless Sensor Network (WSN) applies in large areas for monitoring and control, such as in agricultural areas and areas prone to natural disasters. Single-hop routing protocol, such as the Low Energy Adaptive Clustering Hierarchy (LEACH), is ineffective for large areas. LEACH derivatives of the multi-hop...

Supercapacitor offers high energy density, stability and can be build using environment-friendly material. To deepen understanding on how supercapacitor material effect its properties, this work study the effect of treatment on every component of supercapacitor. The capacitor is composed by electrodes,...

Image with better quality will make the next processing easier. This study aims to analyze the result of image quality improvement using color intensity modification to determine the ripeness of avocado. Color intensity modification used two methods, i.e. Histogram Equalization (HE) and Contrast Stretching...

Traditional association rule mining algorithm only generates a set of rules from frequent itemset, the rules obtained cannot generate rules from high-utility itemset. This is because the framework that’s being used to obtain rules from traditional association rule is support-confidence while getting...

In this paper, a deep learning algorithm based on convolutional neural network (CNN) is implemented using pyhon and tensorflow lite for image classification on mobile. A large number different images which contains two types of waste, namely organic and anorganic are used for classification. The first...

This paper presents the simulation works of PID based speed and position controllers for the DC motor used in mobile robot applications. The mathematical model of the DC motor modelling is developed using Matlab System Identification Toolbox based on its input and output signals obtained during open...

The Building Information Modeling (BIM) Repository is required to adapt to its users who access BIM objects independently through the Common Data Environment (CDE). BIM objects are not always easy for all users to understand and misperceptions may occur due to users’ varying abilities and learning styles....

Stabilization of satellite attitude is the most important thing that should always be maintained during orbit. A model of satellite stillness controllers fairly stable against interference and simple has been developed. This is evidenced by testing models to control motion on the Z-axis. A Proportional...

This paper deals with the simulation works for modelling two DC motors and controlling the path position of two wheeled mobile robot based on odometry to track robot movements. The mathematical models of the DC motors which are the main actuators for the robot are obtained by using Matlab System Identification...

This research is a continuation of previous research related to monitoring and automation with certain controls in the electrical engineering laboratory. In the research that has been done, it is related to the design and build of monitoring of electrical quantities in Polines’ electrical workshops....

Recommendation systems are widely used on website platforms such as e-commerce, marketplaces, streaming movies to produce appropriate item recommendations for each user. The traditional memory-based collaborative filtering approach is currently used in recommender systems. This approach relies on users’...

ES920LR is a type of LoRa in Japan, this type of LoRa has a frequency specification of 920 MHz and a range of 3 km at Free Space Path Loss (FSPL), the ES920LR is tested using a Pulse sensor and placed in an arm position to detect heartbeat in humans and send multipoint from the transmitter to several...

The demand for higher data rate and large user experience motivates the existence of 5G-NR for twenty-twenty society. However, 5G-NR uses High Frequency, which makes a strong propagation causing lower signal reception due to rain rate in tropical regions. This paper aims to give an overview about the...

Selection of coal fuel for coal-fired power plant is usually required to fulfil criteria such as calorific value, combustion characteristics, slagging fouling potential, and emissions potential. This paper describes coal combustion characteristics were studied by the thermogravimetric analyzer and differential...

Co-firing technology is an essential part of reaching 23% EBT in 2025, where Coal-fired power plant still dominates Indonesian power plant situation. On the other hand, the use of biomass co-firing increases the risk of slagging fouling. An effort to reduce the risk is a test with DTF on a temperature...

The energy mix in 2024 is targeted to be 23% of total energy availability. At this time, the combination of coal and biomass is a priority to achieve the target. This paper describes coal combustion results and sawdust from the slagging and fouling employing XRD analysis. To guarantee co-firing is a...

The use of biomass in co-firing in coal-fired power plants is one step to achieve the renewable energy mix target in Indonesia. Several aspects need considering to implement co-firing, including the slagging fouling aspect. It has the potential to interfere with process performance, reliability, and...

Indonesia has an energy mix target of 23% until 2025 in coal-fired power generation, a mixture of coal with biomass. The compound needs to be analyzed first to determine the combustion characteristics. This paper describes the characteristics of combustion of coal and sawdust (90%: 10%). In the TGA and...

Machine tapered shaft is a shaft with a difference between left and right diameter, and any difference of diameter will cause the formation of taper. To limit the number of tapering that occurs, many taper standards such as ISO, Morse Taper, and others are created. As an example, a workpiece of Morse...

Darrieus helical turbine is a type of CFWT (Cross Flow Water Turbine) turbine which is the development of the Darrieus Turbine for wind with the advantage of having a stable torque at various current speeds and can rotate at low current speeds. The objectives of this final project are (1) To make 5 models...

Billboards are one of the media chosen by the industry to promote their products. The location of the billboard greatly influences the effectiveness of the promotion, the more strategic the location of the billboard the higher the sale value or the rent value of the billboard. A strategic position is...

The utilization of natural fiber as a composite material filler is currently developing, along with the increasing use of these materials which is increasingly widespread ranging from simple ones such as household devices and appliances to the industrial sector. This composite research reinforced Gebang...

Research have been conducted to test the performance and techno-economic analysis of liquid smoke pyrolisator with LPG fuel. Liquid smoke beginning to develop by researchers, to get the higher quality in order to become safe for consumption by the public and not contains carcinogenic substance. Raw material...

Reinforced concrete is a composite material that has had an impact on development in recent decades. Based on this condition, it is necessary to anticipate the reinforced concrete forming materials, one of which is the steel reinforcement. Bamboo is a material that can be renewed by nature, possibly...

Pollution has become one of the most talked issues around the world, especially the exhaust gas of diesel engines emission. Therefore, this study is intended to find ways of reducing harmful exhaust gases from diesel engines by improving the filter system using a catalytic converter with natural zeolite...

AC8A aluminum is a silicon aluminum alloy which has a Si level between 11-13% wt, the material commonly used to make pistons. There is also the weakness of a piston with a high silicon content, which is brittle or brittle along with the increase in silicon content so that a rough and large primary silicon...

The drying cabinet had functioned as a storage hot air from the solar collector. There were some trays inside the drying cabinet. This paper had many purposes to predict air vector velocity and air temperature distribution inside the drying cabinet. It was done by simulation. It used computational fluid...

Biodiesel as alternative fuel is widely produced from various source of vegetable oil. The production of biodiesel also generates large number of by-products, such as glycerol. The limitation of glycerol market, make glycerol the best candidate to propose as feedstock for chemical production because...

The Covid-19 pandemic has resulted in not only health crisis but also economic shocks. It is essential to develop flexible economic models which evaluate the impact of pandemics on different economic sectors. Such assessments are fundamental to inform and to tailor the responses of governments and stakeholders...

Distillation is a process of separating two or more components of a liquid based on the boiling point. In simple terms, distillation is done by heating/evaporating the liquid then the vapor is cooled back so that it becomes liquid with the help of a condenser. Various studies on the distillation column...

Bali consists of nine districts where aside from working in the tourism industries, the citizen also works as an artist and craftsman. The craftsman produces several kinds of handicrafts such as sculptures, souvenirs, metal crafts, and others. Generally, the craftsmen in Bali are categorized as micro,...

Composite is a new material that consists of matrix and fiber. It can be used for many purposes such as vehicle body material, storage material, and structural material. This study had a purpose to predict the tensile strength of a composite by simulation. The composites were made from waste such as...

The monitoring system in solar power generation is important. It will provide some data for measuring the performances of the overall system. In this paper, a monitoring system of 660Wp solar panels for the roasted coffee machine was introduced. This system uses Arduino Mega as its central processor...

Batang Kandis River was located at Padang Pariaman Regency, West Sumatra Province. This river is one of the rivers that empties into the Batang Anai river, one of the large river that empties into the Indian Ocean. Location of this river is important because could resulting flood that can impacted on...

The sprocket as a component of motorcycle manufactured to transmit rotary motion between two shafts are supposed to possess wear resistant properties. This motorcycle part are however produced in different wear resistance levels especially low, medium and high. Meanwhile, low grade sprocket (imitation)...

The purpose of this research is to design a tourism support boat in Siak Regency where the ship will be designed in the form of the royal ship of the sultan Syarif Kasim, as comfortable as possible to influence the emotional of the passengers on the ship, so that it can help them to enjoy the atmosphere...

In the Research of DIPA Grant in 2019, the size of the hydraulic ram (hydram) pump used in Pakandangan in Padang Pariaman Regency was designed. In this area, a water source had not been utilized to irrigate the paddy field of 10 hectares since it was located higher than the water source. The designed...

The nickel electroplating process has been carried out on steel with the help of a magnetic stirrer to homogenize the coating results on the surface. This study aims to determine the effect of time and temperature with the help of a magnetic stirrer on the thickness and hardness of the coating surface....

This paper presents the balancing control of underactuated unicycle robot. The authors propose new approach to control such system using Adaptive Super-Twisting Sliding Mode Control. First, the simplified dynamic model of unicycle robot is adopted from previous results and then the normal forms are obtained...

Increased traffic flow will have an impact on the traffic performance on urban road which results in traffic congestion. Factors supporting the occurrence of congestion is side friction. The Timor Raya Street in Kupang, Indonesia, which at some points is a commercial area with a high level of activity...

Plastic waste is non-organic material that is difficult to destroy even if it is burned and is often found in the environment around us. This waste comes from households, traditional markets, shops, terminals, and others in the form of plastic food packaging, beverage bottles, plastic bags, and others....

The use of Biodiesel as a diesel engine fuel is being prioritized by the government to replace the increasingly thinning fuel oil and to reduce air pollution due to diesel engine exhaust gases. It is expected that in 2050 fuel oil can already be replaced with biodiesel. Biodiesel that has started to...

The research begins with the idea of how to add a weld metal alloy to the worn surface of the hammer crusher so that it can be reused. The aim is to produce a hammer crusher that is tough, and abrasive to the equipment on the cooler clinker. There has been a fair amount of previous research on hard facing...

Application energy-efficient for air conditioning equipment are the main indicators of the energy conservation and sustainability in Heating, Ventilating, and Air Conditioning (HVAC) systems. The heat recovery is one of the methods of energy savings and optimization. The present work aims to compare...

Experimental investigation for determining the optimal tilt angle of flat-plate solar heater installation in Denpasar city to optimize the thermal energy performance. This preliminary research focused on the performance of a flat-plate-thermosyphon solar water heater system based on temperature difference...

Study of Polymerised Merbau Extractives (PME) applications for modified wood products was carried out on oil palm wood. The tests of physical and mechanical properties were conducted using an Instron® UTM following the relevant standards. Thermal properties were investigated using differential scanning...

Air conditioning system is a cooling system whose function is to condition the air according to the desired needs. Air conditioning can be done in workspaces, foodstuffs, or industrial products that are desirable in accordance with the needs. The cooling system used is a steam compression system. The...

This study focused on the phytochemical and anti-diabetes activity of n-Hexane, Ethyl acetate, and Methanol Extracts of Matoa (Pometia pinnata) fruit peel from West Kalimantan Indonesia using Alpha-Glucosidase enzyme. The experiment consisted of three stages, which are 1) extraction of the Matoa (Pometia...

Sangeh Village has an area of 4.5 km2, located in Abiansemal District, Badung Regency, with a population of 2,322 people with a density of 1,084 people / km2. The clean water supply system in this village uses water from the local drinking water company in Badung Regency with a 100% service percentage...

The process of making Balinese arak used distillation of coconut palm through a process of heating and re-condensing the heated nira so that it becomes arak with alcohol content. Based on the results of the research the effect of fermentation time on alcohol content in coconut nira (Tuak), fermentation...

The probability for collisions between commercial vessels and traditional fishing vessels remains relatively high in Indonesian waters. Some cases indicated that the crash between traditional fishing boat and commercial vessel resulted from the failure of large vessel on detecting the fishing boat clearly,...

Grain grinder technology is very influential in determining the quality of rice produced. To support this potential, various things are taken, one of them is by increasing rice farmers to process their harvests independently in households. This thing must be encouraged so that we can process agricultural...

The quality and efficiency of the 3-dimensional contour map of the Mahat watershed are very useful in helping to analyze the distribution of the ideal soil composition (Vw, Vg, Vs). Furthermore, the distribution of soil characteristics is compared with the topography to help integrate and sustainable...

Users of four-wheeled vehicles or cars in Indonesia are increasing every year. Therefore, the production of manufacturing companies in the automotive sector is increasing. This relates to companies providing vehicle components that are formed from sheet metal material to be mass-produced with the same...

Traditional coffee roasting is still done using traditional tools, usually of clay or steel pan and stirrer, as well as a stove and firewood, before roasting, the wet process is carried out for the coffee cherries. National coffee bean production which 600,000 tons per year, only 20% can be processed...

One of the most dangerous diseases that threaten human life is heart disease. One way to analyze heart disease is by doing echocardiography. Echocardiographic test results can indicate whether the patient’s heart is normal or not by identifying the area of the heart cavity. Therefore, many studies have...

Indonesia as a tropical country is very suitable for the development of various alternative energies, especially solar power (photovoltaic). This development will be followed by the development of DC motor technology and batteries to replace equipment that uses AC electricity and conventional energy...

With the development of smartphone technology becoming more sophisticated, more developers were trying to increase the capability of smartphone. One of such functionality was the use of camera technology not only as image capturing device, but also as scanner substitution device to increase productivity....

Indonesian tofu industries produce wastewater with high amounts and concentrations of organic compounds that pollutes the environment. Biological treatment of anaerobic and aerobic systems can degrade organic compounds and produce appropriate effluents for disposal into the environment. Anaerobic degradation...

In the Badeng Watershed of Banyuwangi was a flood that resulted in erosion and landslides. The amount of kinetic energy of rainfall can erode the soil layer, leading to high rainfall erosivity. The purpose of this study was to determine the rainfall erosivity and erosion rate with the MUSLE method using...

The study aims to conduct a comprehensive literature review on supply chain management frameworks by determining research sources; determine the keyword pattern for the search process; using inclusion and exclusion criteria; data extraction; and finally analyzing findings to answer research questions....

Three-dimensional (3D) scanning has been used widely for prototyping. However, sometimes the object is not successfully reconstructed into a 3D model. One of the important parameters in the mesh generation is the radius threshold. This study aimed to investigate the effects of the radius threshold on...

The world’s most discussed issues are energy and health. Concerns about environmental pollution and health motivated the automotive manufacturers to find solution to reduce the exhaust emission gas. One solution developed at this time is to replace the conventional into electronic fuel injection system....

Wood is one of the main ingredients in making furniture. However, the faster the furniture industry in Indonesia cannot improve. Therefore, applying fast-growing wood and starting to be small diameter is applied. But the weakness of this wood will decrease and its size is relatively small. Innovation...

Biodiesel is an alternative diesel fuel, made from renewable biological sources such as vegetable oils and animal fats. Used cooking oil is one of the biodiesel raw materials. The development of biodiesel synthesis in this study focuses on production efficiency and reducing negative effects on the environment....

One of the main supports in the development of green tourism is green accommodation. In early, Balinese style building was designed with totally green concept with adequate natural environment. However, in recent years, Balinese style buildings considerable has weaknesses in terms of structure and materials...

The rapid development of information technology makes it easier for people to get information quickly. One of the developments in information technology that is currently being developed is a website. The website is one of the tools that are now widely used as a promotional medium. This research focuses...

One of the efforts applied to green building is the concept of vertical garden, where plantation crops which are usually planted on the ground are now planted on the walls of buildings that apply the green building concept. The existence of a vertical garden in the building is considered quite beneficial...

Every year the growth of the number of people in Indonesia continues to increase, then this situation is not accompanied by a safe, convenient, and nearest parking location to the destination location, this is what triggers a number of problems that develop in the community. Due to the increasingly dense...

Badeng watershed is one of the important watersheds in the Banyuwangi Regency. In the years 2018, Alas Malang Village, there was a flash flood. This flooding occurs because of the high rainfall intensity and causes erosion and landslides in the upstream area of Badeng Watershed, recorded in Badeng Watershed...

Water is the basic need for better quality of life and becomes the sensitive issue in the urban area such as Denpasar City, the Capital of Bali province that very well known as the tourist destination in the world. Some experts predicted that Denpasar City will face the clean water crisis in 2019 and...

Steel contain a considerable concentration of iron alloy and carbon when compared to other elements. Furthermore, carburzing process is used to improve mechanical properties of this metal through the addition of an activated carbon. This study used rough and smooth sizes of schleichera oleosa wood charcoal...

The study of normalization of steel by hardening using manganese powder is the design form of this study. The steel used is AISI 1020 steel because it has general standards and is suitable as a base for hardening. The interesting thing about this research is the element of manganese (Mn) in rock mineral...

A screw conveyor type of pig feed mixing machine was designed, fabricated, and evaluated. The machine comprises the following major components; hopper, frame, mixing chamber, Mixing bar, screw conveyor chamber, screw conveyor, shaft, Electric motor, and pulleys. The uniqueness of this screw conveyor...

The purpose of this study is to reduce environmental problems by using wasted material i.e. with crushed glass. 15% crushed glass has substituted with 15% total weight of sand materials then added polypropylene fibers within RC specimens. Specimens treatment added in this case used freshwater and seawater...

The construction system chosen for a prototype is part of the implementation of concept design including a pedestrian pathway. With the main user, the pedestrian is children, the process approaches considering child characteristics. Two main areas for child pedestrian-friendly prototype are the pedestrian...